Rex’s Adventure
By: Donovan Delacruz
Once upon a time there lived a boy name rex. Rex lived in a small town, with very little people. One day rex had a school trip to attend to, the field trip was to a science museum. All the children in rex’s class were very excited. They took a big yellow bus to the museum, when they got inside there was a tour guide to guide them. The first place the guide took them to see is “the room of electricity”.
The guide was talking to them about electrons and how they make charges, like static electricity. He also told them about electricity and hot it works in a circuit, he told them that a circuit must have a positive and negative charge in order for the circuit to work. He taught them how to make static electricity by using friction. The guide told them ohms law. The tour guide gave them an activity to do to better understand a circuit; he gave rex 3 wires, one battery, and a light bulb. The guide was leading rex through the whole thing because he did not really understand. The guide told rex that he had been putting the wires on the wrong side of the battery. The guide explained why he needs to fix it; he told him that the circuit would need a positive and negative charge in order for it to work. On rex’s second try, he got it right. The guide told the group what a resistor is. He said a resistor is a small piece of the circuit that reduces current flow. He taught them about the receiver, he said that the receiver would be the light bulb or the object receiving all the energy to work. Rex asked what ohms law was, the guide told him that ohms law is a law stating that current is constant, for example if you turn off the switch all the electrons in the system will stop they will not just disappear. Before they went the guide wanted to make sure they understood what voltage was, he said that voltage is the measurement in electricity. The guide took them to the next room and this room was about gravity and force. Amps are another measurement of electricity. He told them the units; he told them m is for meters s is for seconds.
The room had a bunch of floating objects everywhere. They even had a testing spot for crashing cars and seeing how much momentum they had. The guide told them about the conservation of momentum, he said that momentum is made up of velocity and mass. Rex did not really understand his definition so he asked to set an example. The guide said think of a small car and a big truck going at the same speed, the truck would have more momentum because of the spend and how much weight it has so the truck has more momentum. If the small car had more mass but still with the same speed the small car would have momentum.
He showed all the kids small cars (small car, and truck) and he smashed them together when the cars hit each other the small car flew off the table. The next room the guide took them to is the room of gravity. In this room, the guide is going to explain to the kids how gravity works. He told the kids that there are different kinds of forces like elastic force, and normal force. The guide told them elastic force is when you stretch and object. For example using a rubber band or bungee jumping. Force is changing an objects motion in any way. Normal force is the surface of which an object is on or holding the object. For example, the earth is a normal force; a tree is a normal force. One of the kids said what if you stand on a cloud, would that he normal force. The guide told the little child that it would not really be a normal force because it is made of water and you cannot stand on water so normal force would not be in effect. Mass is the amount of weight an object has. Isaac newton was a very famous physicist; he was the person who created calculus. Isaac newton created the law of motion. He also told the children about tension, tension is a force related to stretching. Applied force is when you move an object by yourself.
Gravity is the amount of force being held on you, gravity is what is holding you to the earth right now. If there were not enough gravity, we would all be floating right now. The guide showed the kids an example, he took a ball and he dropped it on the ground, he said, “Now notice that the ball just falls and doesn’t float, it is because gravity is holding it down”. The guide told them the reason why it takes so long to fall; it was because of the resistance. Resistance is only in act when you are moving or falling. Free fall is when any part of your body moves and uses weight. After the field trip was over they all went home. Rex had told his parents what had happened and what he learned, rex was so amazed with physics, he was especially happy that he got to learn about it.
All of a sudden the light build went out, his mom got scare. Rex said that the light build went out because there was too much current going on in there. When they changed it was better. Over the past years rex had finished school and had gone to college where he studied physics. He got his masters and he is now a teacher at Parkview high school; where he had attended. He is everyone’s favorite teacher. His mother was very proud of what rex had become. Rex in his middle ages is now a professor at MSU. Rex has three kids. Two are teachers at Parkview, and one is a lawyer. Rex has lived a long and beautiful life. In his years he has learned so much about physics.